The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2025
Filed:
Oct. 04, 2021
Applicant:
Toppan Printing Co., Ltd., Tokyo, JP;
Inventor:
Naoki Minamikawa, Tokyo, JP;
Assignee:
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B42D 25/328 (2013.12); B29C 43/46 (2005.12); B42D 25/23 (2013.12); B42D 25/47 (2013.12); G02B 1/04 (2005.12); G02B 1/10 (2014.12);
U.S. Cl.
CPC ...
G02B 1/10 (2012.12); B29C 43/46 (2012.12); B42D 25/23 (2014.09); B42D 25/328 (2014.09); B42D 25/47 (2014.09); G02B 1/04 (2012.12); B29C 2043/463 (2012.12);
Abstract
An optical structure includes a multilayer relief that has a first surface having an uneven shape, and a reflection layer that is formed on the first surface and reflects visible light. The multilayer relief includes a first resin layer that contains a non-radiation curable resin as a main component and constitutes the first surface, and a second resin layer that contains a radiation curable resin as a main component and is adjacent to the first resin layer. The first resin layer has a thickness smaller than an unevenness difference of the uneven shape.